Microsoft Vista, Windows 7, 8, &10, Windows 2008 & 2012 do not have a native serial UPS shutdown. For a serial UPS use PowerChute Business Edition or USB to serial converter.

For any USB connected UPS these OS do have some configuration for shutdown if you do not want to use the supported APC software options. Once a USB UPS is connected, the OS adds configuration similar to that of a laptop with an on-board battery. Once this happens, you can set up a desktop or server's power options in the same way as a laptop.

Please review the attached PDF for step by step instructions:

The following links to Microsoft documents also help in configuring these native options: